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Service bulletin 17730-301 RevB

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10123461
Published by NHTSA2017-11-14
Manufacturer's number17730-301 RevB
Manufacturer's date2017-10-01
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SUSPENSION

NHTSA's summary

Operation Name: Hendrickson Truck Commercial Vehicle Systems Document Name: Technical Procedure - ULTIMAAX Rear Suspension for Kenworth Vehicles Summary: This document provides preventive maintenance, service, repair and rebuild instructions for Hendrickson ULTIMAAX rear suspension systems equipped on Kenworth vehicles.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Labels and manuals, Suspension

Vehicles listed
HENDRICKSON UNK

Listing a model year does not mean every vehicle of it is concerned: the document says which.